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What is a lava lamp?
A lava lamp is a glass vessel filled with a clear liquid and a coloured wax, sitting on a base that holds a small bulb. The bulb warms the wax until it becomes less dense than the liquid, so it rises in slow blobs, cools at the top, and sinks again. The cycle never repeats exactly. It was invented in Britain by Edward Craven Walker in 1963 and sold as the Astro lamp.
16 modelsFrom £43.99Classic, retro, jellyfish or XLMains powered, bulb includedFree UK delivery over £45
Who is this collection for?
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For a teenager's bedroom or a chill-out corner
A lava lamp is mood lighting that never looks the same twice. It suits a desk, a gaming setup or a bedside table.
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For the friend who loves the 70s, or has never seen one
Parents, partners and flatmates after a gift that is nostalgic for some and brand new for others.
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For anyone curious about how it works
Heat, density and convection in a glass bottle. It is a physics demonstration disguised as decor.
How to choose a lava lamp
Three things matter: the height (which sets the mood in a room), the colour combination of wax and liquid, and whether you want a classic shape or a novelty one. Our range covers all of them.
| Type | Best for | Height | Price |
|---|---|---|---|
| Classic colour lava lamp | A first lamp, bedside or desk | 35 to 40 cm | £44 to £70 |
| Retro 70s and colour changing | Living rooms, nostalgia gifts | 36 to 40 cm | £61 to £70 |
| Jellyfish and novelty lamps | Kids' rooms, gaming setups | 30 to 40 cm | £50 to £90 |
| Large and statement lamps | Lounges, bars, feature corners | 50 cm and over | £90 to £207 |
A taller lamp holds more wax and gives longer, lazier blobs. All our lamps are mains powered and take a standard replacement bulb, listed on each product page.
The science in two lines
Wax and liquid have almost the same density. Heat from the bulb expands the wax a little more than the liquid, so it floats; at the top it cools, contracts, and sinks. That tiny density difference is the whole show.
It takes 45 minutes to two hours to warm up the first time, which is why patience matters more than the bulb.
Our three bestsellers
Lava Lamp: your questions, answered
How long does a lava lamp take to warm up?
Between 45 minutes and two hours the first time, then 30 to 60 minutes each time after. Leave it on and let the wax find its rhythm.
Can I leave it on overnight?
Better not. Run it for up to 8 hours, then let it cool. Overheating makes the wax cloudy and shortens the lamp's life.
Why is my lava lamp cloudy?
Usually because it was moved or shaken while warm, or run too long. Let it cool completely, then run it again for a few cycles; most clear up. Never shake it.
Do you sell replacement bulbs?
The bulb type is stated on each product page. Most use a standard small reflector bulb available in any hardware shop.
What plug does it come with?
Our lava lamps are mains powered. Check the product page for the plug type and whether a UK adapter is required.
Free UK delivery over £45 and 30 days to return it. For a lamp that reacts to your fingers instead of heat, the plasma balls are next door.